The Shimano 105 Front Hub is a durable and smooth 105 front hub which is radial lacing compatible. Cubic Boron Nitride treated cone races provide a mirror-smooth bearing surface for a low friction, corrosion-free performance. Labyrinth and low-friction contact sealing effectively shuts out water and muck without affecting rotational smoothness. Internal O-rings help maintain and increase service life of front hub by holding the grease in the bearing housing. Comes complete with quick release skewer.